30+ HP with these items possible ?

[Merlin_83]

Greetings,

If I use a decent under drive pulley, ECU tune, filter or air box change and exhaust. Can I except to see 35+ hp ? Perhaps not at the wheels - but at crank ?

And do you have issues with AC or power steering, alternator since the under drive pulley is 'turning' those units slower ?

Cheers,
Merlin

[///M Power-Belgium]

Test pipes and tune add about 30-35HP .

[Ezio]

when you say exhaust, what do you mean.

if you change the mufflers, there is not really anything to be gain. If you can the cats and add a tune. You will gain a lot.

[EJT86]

It might depend on what brand pulleys they are...I've had Turner pulleys since the spring and not a single problem...and yes tune pulleys and filter (going by claimed gains by the manufacturer) 30+hp

[FormulaMMM]

http://www.m3post.com/forums/showthread.php?t=567651

[Hujan]

Without deleting the primary cats, I'd estimate the rest of the bolt-ons (pulley, intake/filter, tune) are going to get you 15 whp max.

[pbonsalb]

Depends on what you mean by exhaust. If deleting cars, yes. If just a rear exhaust, probably not.

[Killerfish2012]

Originally Posted by Merlin_83

And do you have issues with AC or power steering, alternator since the under drive pulley is 'turning' those units slower ?

Cheers,
Merlin

Yes, but very little. Go MS pulleys, and call it a day.

[Killerfish2012]

Originally Posted by Hujan

Without deleting the primary cats, I'd estimate the rest of the bolt-ons (pulley, intake/filter, tune) are going to get you 15 whp max.

errr..... Pulleys- 10whp, Intake/Filter- 6whp, Tune- 12whp. So roughly 28whp, with all three.

[Hujan]

Originally Posted by Killerfish2012

errr..... Pulleys- 10whp, Intake/Filter- 6whp, Tune- 12whp. So roughly 28whp, with all three.

Unfortunately, it doesn't work that way.

[Killerfish2012]

Originally Posted by Hujan

Unfortunately, it doesn't work that way.

care to elaborate?

[SenorFunkyPants]

Originally Posted by Merlin_83

[.....]
And do you have issues with AC or power steering, alternator since the under drive pulley is 'turning' those units slower ?
Cheers,
Merlin

Under WOT the alternator and A/C disconnect anyway so all you are gaining is by running the water pump slower (assuming accelerating in a straight line so that the PS pump is doing very little work) - might be worth a bhp or two at the expense of running your engine hotter.
You can get dyno results to show better gains from an underdrive pulley by running a battery with a low charge which forces the alternator to stay connected regardless of the engine being at WOT.

[CIFUM3]

Originally Posted by Hujan

Unfortunately, it doesn't work that way.

+1
If we added each individual "gain" from each part all of could reach 450 quite easily.
Best bet, start small than upgrade as you get used to the power.

[Killerfish2012]

Originally Posted by SenorFunkyPants

Under WOT the alternator and A/C disconnect anyway so all you are gaining is by running the water pump slower (assuming accelerating in a straight line so that the PS pump is doing very little work) - might be worth a bhp or two at the expense of running your engine hotter.
You can get dyno results to show better gains from an underdrive pulley by running a battery with a low charge which forces the alternator to stay connected regardless of the engine being at WOT.

It's actually a dyno proven +10whp/10wtq. Have you seen the size of the oem PS pulley? UDPs don't just give a small bump in HP, they also make the motor rev much faster, thus increasing mph.

[Hujan]

Originally Posted by Killerfish2012

care to elaborate?

I think the numbers you quote are a bit overinflated, not necessarily by you since I assume you were going off of what the manufacturers report.

Also, I haven't seen a lot of evidence that these gains are cumulative. For example, I'm not sure that a tune or an intake by themselves will generate much increase at all. Put them together, though, and you will likely realize a small gain. Thus, rather than 10 hp for the intake and another 10 hp from the tune, it's likely you'd only see 10 hp for both together.

I also suspect that a freer-flowing intake is not likely to help much on a stock car that has its primary cats in place. Those create massive amounts of back pressure. If the back pressure is high enough, I'm not sure "opening the window," so to speak, with an intake will do a lot to feed more air into the engine. You either need to reduce the back pressure (i.e., delete the primary cats) or use a method that can overcome the pressure (i.e., a supercharger).

I do like under drive pulleys, to the extent that they may also allow the engine to rev a bit more freely by removing drag. If so (and I'm speculating that they do), that would be worth it aside from any increase in HP, in my opinion.

[SenorFunkyPants]

Originally Posted by Killerfish2012

It's actually a dyno proven +10whp/10wtq. Have you seen the size of the oem PS pulley? UDPs don't just give a small bump in HP, they also make the motor rev much faster, thus increasing mph.

If under driving the water pump and to a smaller extent the power steering pump (by what 16%?) is worth 10whp what would disconnecting them altogether be worth?
In other words how much BHP do these two ancillaries consume at max rpm if a mere 16% reduction is worth a massive 10whp? 62.5 whp?
There are cars that have engines producing less power than that.

[Merlin_83]

Originally Posted by Ezio

when you say exhaust, what do you mean.

if you change the mufflers, there is not really anything to be gain. If you can the cats and add a tune. You will gain a lot.

Sorry I had explained or added more to the part about exhaust. I was planning to use ESS test pipes and MPE or other axle back type performance exhaust.

Cheers,
Merlin

[Killerfish2012]

Originally Posted by SenorFunkyPants

If under driving the water pump and to a smaller extent the power steering pump (by what 16%?) is worth 10whp what would disconnecting them altogether be worth?
In other words how much BHP do these two ancillaries consume at max rpm if a mere 16% reduction is worth a massive 10whp? 62.5 whp?
There are cars that have engines producing less power than that.

Unfortunately for you, +10WHP, and +3wtq for pulleys, is dyno proven via various independent member before and after SAE corrected dynos. Just do a search

[Killerfish2012]

Originally Posted by Hujan

I think the numbers you quote are a bit overinflated, not necessarily by you since I assume you were going off of what the manufacturers report.

I'm going off member dynos.

Originally Posted by Hujan

Also, I haven't seen a lot of evidence that these gains are cumulative. For example, I'm not sure that a tune or an intake by themselves will generate much increase at all. Put them together, though, and you will likely realize a small gain. Thus, rather than 10 hp for the intake and another 10 hp from the tune, it's likely you'd only see 10 hp for both together.

According to member dynos, intake and or air filter gives the same +6whp. The tune also shows a gain on the dyno of about 12whp. Not these gains from these two mods are at the peak. Not much if any torque is gained down low.

[Mfanatik]

Originally Posted by SenorFunkyPants

If under driving the water pump and to a smaller extent the power steering pump (by what 16%?) is worth 10whp what would disconnecting them altogether be worth?
In other words how much BHP do these two ancillaries consume at max rpm if a mere 16% reduction is worth a massive 10whp? 62.5 whp?
There are cars that have engines producing less power than that.

Probably a loss in compression due to over heating coolant, result -414hp.

It is the concept as dynoing with 18" and 20" wheels - cars with no wheels won't accelerate faster or handle better due to less weight